
package cartagows.wsframework.wssecurity.policy.builders;

import org.apache.axiom.om.OMAttribute;
import org.apache.axiom.om.OMElement;
import org.apache.neethi.Assertion;
import org.apache.neethi.AssertionBuilderFactory;
import org.apache.neethi.builders.AssertionBuilder;

import cartagows.wsframework.wssecurity.policy.SP11Constants;
import cartagows.wsframework.wssecurity.policy.SPConstants;
import cartagows.wsframework.wssecurity.policy.model.SecurityContextToken;

import javax.xml.namespace.QName;

public class SecurityContextTokenBuilder implements AssertionBuilder {

    public Assertion build(OMElement element, AssertionBuilderFactory factory)
            throws IllegalArgumentException {

        SecurityContextToken contextToken = new SecurityContextToken(SPConstants.SP_V11);

        OMAttribute  includeAttr = element.getAttribute(SP11Constants.INCLUDE_TOKEN);
        
        if(includeAttr != null) {
            int inclusion = SP11Constants.getInclusionFromAttributeValue(includeAttr.getAttributeValue());
            contextToken.setInclusion(inclusion);
        }

        element = element.getFirstChildWithName(SPConstants.POLICY);

        if (element != null) {

            if (element.getFirstChildWithName(SP11Constants.REQUIRE_DERIVED_KEYS) != null) {
                contextToken.setDerivedKeys(true);
            }

            if (element
                    .getFirstChildWithName(SP11Constants.REQUIRE_EXTERNAL_URI_REFERNCE) != null) {
                contextToken.setRequireExternalUriRef(true);
            }

            if (element
                    .getFirstChildWithName(SP11Constants.SC10_SECURITY_CONTEXT_TOKEN) != null) {
                contextToken.setSc10SecurityContextToken(true);
            }
        }

        return contextToken;
    }

    public QName[] getKnownElements() {
        return new QName[] {SP11Constants.SECURITY_CONTEXT_TOKEN};
    }

}
